A double door gate apparatus having a frame, a main gate and a secondary gate, where the apparatus includes the unique features of a) a latch apparatus between uppermost framework members of the main gate and secondary gate, b) the latch apparatus being weighted to return to a normally closed position, c) each of the main gate and secondary gates having an inverted U-shaped piece engaging the bottommost horizontal member such that each of the main and secondary gates need to be lifted prior to being opened and prior to being closed, and d) a pair of hand wheels on a common shaft that work together to space the double door gate apparatus a desired distance from a vertical surface such as a wall.

A double door gate apparatus having a frame, a main gate and a secondary gate, where the apparatus includes the unique features of a) a latch apparatus between uppermost framework members of the main gate and secondary gate, b) the latch apparatus being weighted to return to a normally closed position, c) each of the main gate and secondary gates having an inverted U-shaped piece engaging the bottommost horizontal member such that each of the main and secondary gates need to be lifted prior to being opened and prior to being closed, and d) a pair of hand wheels on a common shaft that work together to space the double door gate apparatus a desired distance from a vertical surface such as a wall.

An assembly for securely enclosing an opening defined by a building structure comprising a frame sized to be disposed to substantially surround the opening and engage the structure and a panel pivotally securable to the frame and sized to substantially cover the opening, the panel having a front and a back. Locking means for selectively locking the panel to the frame in a closed position and unlocking the panel so that it can be pivoted to an open position, the locking means comprising selectively an internal locking means manually operable only from the inside of the building and an external locking means manually operable from the outside of the building.

An assembly for securely enclosing an opening defined by a building structure comprising a frame sized to be disposed to substantially surround the opening and engage the structure and a panel pivotally securable to the frame and sized to substantially cover the opening, the panel having a front and a back. Locking means for selectively locking the panel to the frame in a closed position and unlocking the panel so that it can be pivoted to an open position, the locking means comprising selectively an internal locking means manually operable only from the inside of the building and an external locking means manually operable from the outside of the building.

A modular channel for a door including an elongated channel forming at least a portion of an internal frame for the door. The elongated channel has opposing sides and a base member extending between one edge of each side. The modular channel includes a pair of parallel slotted openings along the base member and a channel adapter including a tabs corresponding with the pair of slotted openings. The tabs include a locking protrusion extending from tab. The tabs slidably engage the slotted openings and the locking protrusions engage the slotted openings when the tabs are urged fully into the slotted opening. The slotted openings may be positioned parallel with the elongated channel length and the elongated channel may include at least one transverse slot perpendicular to the slotted openings. The channel adapter may include a curved locking tongue disposed perpendicular to the tabs and engagable with the transverse slot.

A modular channel for a door including an elongated channel forming at least a portion of an internal frame for the door. The elongated channel has opposing sides and a base member extending between one edge of each side. The modular channel includes a pair of parallel slotted openings along the base member and a channel adapter including a tabs corresponding with the pair of slotted openings. The tabs include a locking protrusion extending from tab. The tabs slidably engage the slotted openings and the locking protrusions engage the slotted openings when the tabs are urged fully into the slotted opening. The slotted openings may be positioned parallel with the elongated channel length and the elongated channel may include at least one transverse slot perpendicular to the slotted openings. The channel adapter may include a curved locking tongue disposed perpendicular to the tabs and engagable with the transverse slot.

A door system including a primary door molding attachable to a primary door frame, the primary door molding including a first vertical member and a first hinge member extending from the first vertical member. One of a horizontal member from which the first vertical member downwardly extends and the first vertical member includes a first rotatably engageable element, and the first hinge member includes a second rotatably engageable element vertically spaced from the first rotatably engageable element.

An assembly for securely enclosing an opening defined by a building structure comprising a frame sized to be disposed to substantially surround the opening and engage the structure and a panel pivotally securable to the frame and sized to substantially cover the opening, the panel having a front and a back. Locking means for selectively locking the panel to the frame in a closed position and unlocking the panel so that it can be pivoted to an open position, the locking means comprising selectively an internal locking means manually operable only from the inside of the building and an external locking means manually operable from the outside of the building.

An assembly for securely enclosing an opening defined by a building structure comprising a frame sized to be disposed to substantially surround the opening and engage the structure and a panel pivotally securable to the frame and sized to substantially cover the opening, the panel having a front and a back. Locking means for selectively locking the panel to the frame in a closed position and unlocking the panel so that it can be pivoted to an open position, the locking means comprising selectively an internal locking means manually operable only from the inside of the building and an external locking means manually operable from the outside of the building.

A wind turbine tower wall having an orifice for accessing the interior of the tower, and an outer surface defined by generatrices; and a reinforcement frame joined to the tower in the orifice zone, and comprising least two parts joined one to each other. Each part has a mid-plane that is parallel to at least one generatrix, the mid-planes of at least one pair of adjacent parts forming an angle other than 180 therebetween. It enables the obtention of a frame more conformed to the curvature of the tower, combining savings in the material of said frame, greater optimization of the resistance of the tower and reduced stress concentration.